50
Form E-564
Eastman
®
Drive problems occur for a variety of reasons, depending on the conditions in your installation. The causes of
faults in multi-axis systems can be especially complex. If you cannot resolve a fault or other issue using the
trouble shooting guidance presented below, customer support can give you further assistance.
Troubleshooting the Servo Motor Drives
Problem
Possible Causes
Remedy
"HMI message:
Communication fault"
1.wrong cable used, cable plugged into
wrong position on drive or PC
2.wrong PC interface selected
1. plug cable into the correct sockets on the
drive and PC
2. select correct interface
Motor does not rotate
1. drive not enabled
2. software enable not set
3. break in set point cable
4. motor phases swapped
5. brake not released
6. drive is mechanically blocked
7. motor pole no. set incorrectly
8. feedback set up incorrectly
1. apply ENABLE signal
2. set software enable
3. check setpoint cable
4. correct motor phase sequence
5. check brake control
6. check mechanism
7. set motor pole no.
8. set up feedback correctly
Motor oscillates
1. gain is too high (speed controller)
2. feedback cable shielding broken
3. AGND not wired up
1. reduce VL.KP (speed controller)
2. replace feedback cable
3. join AGND to CNC-GND
"Drive reports
following error"
1. Irms or Ipeak set too low
2. current or velocity limits apply
3. accel/decel ramp is too long
1. verify motor/drive sizing
2. verify that IL.LIMITN/P,VL.LIMITN/P are
not limiting the drive
3. reduce DRV.ACC/DRV.DEC
Motor overheating
"1. motor operating above its rating
2. motor current settings incorrect"
1. verify motor/drive sizing
2. verify motor continuous and peak current
values are set correctly
Drive too soft
1. Kp (speed controller) too low
2. Ki (speed controller) too low
3. filters set too high
1. increase VL.KP (speed controller)
2. increase VL.KI (speed controller)
3. refer to documentation regarding reduc-
ing filtering (VL.AR*) Drive runs roughly Kp
(speed controller) too high
4. Ki (speed controller) too high
5. filters set too low
6. reduce VL.KP
Drive runs roughly
1. Kp (speed controller) too high
2. Ki (speed controller) too high
3. filters set too low
1. reduce VL.KP (speed controller)
2. reduce VL.KI (speed controller)
3. refer to documentation regarding increas-
ing filtering (VL.AR*)
"During the installation,
a dialog box saying “Please
wait while the installer
finishes determining your
disk space requirements”
appears and never disap-
pears."
1. MSI installer issue.
2. Harddisk space not sufficient
1. Cancel the installation. Relaunch the
installer (you may need to try several times,
the problem is random).
2. Make sure that you have enough disk
space on your hard disk (~500MB to allow
Windows .NET update if necessary), if not
make some space.